S
M
T
W
T
F
S
26
94°
75°
27
94°
78°
28
96°
78°
29
96°
78°
30
91°
74°
31
91°
76°
1
89°
76°
2
85°
73°
3
87°
75°
4
91°
76°
5
89°
75°
6
90°
75°
7
88°
76°
8
87°
75°
9
91°
76°
10
90°
74°
11
87°
76°
12
87°
75°
13
88°
76°
14
88°
76°
15
87°
75°
16
87°
76°
17
88°
76°
18
88°
75°
19
87°
76°
20
88°
76°
21
86°
74°
22
88°
75°
23
87°
76°
24
89°
76°
25
91°
75°
26
91°
76°
27
90°
76°
28
88°
74°
29
86°
76°
30
86°
75°
31
87°
75°
1
89°
76°
2
90°
75°
3
90°
75°
4
89°
74°
5
87°
75°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Slidell
Slidell's August 2026 forecast shows daily high temperatures ranging from 85° to 96°, with overnight lows between 73° and 78°. The average high for August is 89° with an average low of 75°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Slidell. See also: September | October | November.
